Sole Trader Accounting Software That Keeps Your Books Yours

If you're searching for sole trader accounting software, you've probably already tried a spreadsheet, a shoebox of receipts, or an app that quietly assumed you wanted everything sent to HMRC the moment you logged an expense. WDI Billing is built differently. It's self-employed accounting software designed around a simple idea: your books belong to you, and nothing leaves your account until you decide it should.

Built for Sole Traders and the Self-Employed

Whether you invoice clients as a freelancer, run a trade, or juggle several income streams, WDI Billing handles the everyday reality of being a sole trader - invoicing, expense capture, mileage, and a running picture of what you actually owe. It's the same engine whether you call yourself a sole trader or search for self-employed accounting software; the product doesn't change, only the language does. There's no forced upgrade path into a limited company product you don't need yet, and no assumption that you have a bookkeeper looking over your shoulder.

Prepare Mode: You Press File, Not HMRC

Most accounting software for the self-employed is built to push your data toward HMRC as fast as possible. WDI Billing works in three modes instead: Records, for simply keeping tidy books; Prepare, which is switched on by default and gets your VAT return or Income Tax figures ready and reviewable; and File, which only ever runs when you actively choose to submit. In practice that means you press file - nothing streams to HMRC automatically in the background. You can run your bookkeeping for months in Records or Prepare mode alone, with full visibility over every figure, and only move to File when you're ready.

Who Sole Trader Accounting Software Is Really For

"Sole trader" covers a huge range of businesses: a plumber invoicing after each job, a graphic designer billing retainers, a driving instructor tracking mileage between lessons, a consultant with three or four clients on the go at once. What they share is limited time for admin and no appetite for software built primarily for accountants and bookkeepers managing dozens of clients. WDI Billing is built for the person actually doing the work - simple enough to update between jobs, thorough enough that nothing gets missed when Self Assessment season arrives.

Everything a Sole Trader Needs, Nothing You Don't

• Invoicing - professional invoices in minutes, tracked from sent to paid.
• Expense and receipt capture - photograph or forward a receipt and let document ingestion do the sorting; AI categorisation is optional and off by default, and everything still works perfectly well without it.
• Mileage tracking - log business trips and let WDI Billing calculate your allowable mileage claim.
• Making Tax Digital readiness - your figures are kept in an MTD-compatible format continuously, so quarterly updates and your Self Assessment return are a review-and-file exercise, not a scramble.
• Accountant access - invite your accountant in for a look, on your terms, with a break-glass style login you control and can revoke at any time.

Making Tax Digital for Sole Traders

Many sole traders will need to comply with Making Tax Digital for sole traders as HMRC's Income Tax rules extend to more of the self-employed population. WDI Billing's Making Tax Digital software keeps digital records in the required format from day one, so when your quarterly update or annual return is due, the numbers are already sitting in Prepare mode waiting for your review - not assembled at the last minute from paper receipts. If you're not sure whether the rules apply to you yet, that's fine: Records and Prepare mode are useful long before filing becomes mandatory.

Claiming What You're Owed

Sole traders lose money every year through missed allowable expenses - underclaimed mileage, forgotten subscriptions, home-office costs never logged. WDI Billing's expense capture is built to catch these as they happen rather than at year-end guesswork, feeding directly into your Prepare-mode figures so your tax bill reflects what you actually spent running your business. If you've only just registered as self-employed, this is the easiest point to start good habits, before a backlog of receipts builds up.

Your Data, Your Rules

WDI Billing stores your books on EU/UK-based infrastructure, under data protection rules that apply to you, not to a platform in another jurisdiction. There's no lock-in: export your full records at any time in clean, standard formats, and take them with you if you ever move on. No third party sees your invoices, expenses, or draft returns unless you explicitly grant access. That's the whole point of Prepare mode - control stays with the person whose name is on the business.

Simple, Transparent Pricing

There are no per-invoice fees and no surprise add-ons buried in the small print. Sole trader plans are priced to sit comfortably alongside the other running costs of a small business, with no penalty for invoicing more clients or logging more expenses in a busy month. See exactly what a sole trader plan costs on our pricing page, including the legal reality that if you're under the relevant thresholds, you can run Records or Prepare mode only for as long as you like, with no obligation to file through the software at all.

Switching From a Spreadsheet or Another App

Plenty of sole traders arrive at WDI Billing from a spreadsheet that's grown unwieldy, or from an app that came bundled free with a bank account and now feels like it belongs to the bank rather than the business. Moving over is straightforward: import your existing invoices and expense records, keep working in Records or Prepare mode from day one, and only connect filing when you're comfortable. Because exports are clean and unrestricted at every stage, you're never trading one lock-in for another.

Start Free With WDI Billing

Try sole trader accounting software that treats your books as yours by default. Start a free trial of WDI Billing today, keep your figures in Prepare mode for as long as you need, and file only when you press the button - never before.